indices|indexes|indexed|indexing'ɪndeksnoun+a numerical scale used to compare variables with one another or with some reference number+a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time+a mathematical notation indicating the number of times a quantity is multiplied by itself+an alphabetical listing of names and topics along with page numbers where they are discussed+the finger next to the thumbverb+list in an index+provide with an index+adjust through indexation

The cephalic index is the ratio of the width of a skull to its length multiplied by 100.

Advanced English Dictionary

noun, verb+noun1 (plural indexes) a list of names or topics that are referred to in a book, etc., usually arranged at the end of a book in alphabetical order or listed in a separate file or book: Look it up in the index. + Author and subject indexes are available on a library database.2 (BrE) = CARD INDEX3 (plural indexes or indices) a system that shows the level of prices and wages, etc. so that they can be compared with those of a previous date: the cost-of-living index + The Dow Jones index fell 15 points this morning. + stockmarket indices + house price indexes4 (plural indices) a sign or MEASURE that sth else can be judged by: The number of new houses being built is a good index of a country's prosperity.5 (usually indices [pl.]) (mathematics) the small number written above a larger number to show how many times that number must be multiplied by itself. In the EQUATION 4 = 16, the number 2 is an index.+verb[VN]1 to make an index of documents, the contents of a book, etc.; to add sth to a list of this type: All publications are indexed by subject and title. + New material is scanned, indexed and stored electronically.2[usually passive] ~ sth (to sth) to link wages, etc. to the level of prices of food, clothing, etc. so that they both increase at the same rate

Collocation Dictionarynoun

1 list of names/topics in a book

ADJ.

comprehensive, complete | detailed | general | alphabetical

VERB + INDEX

appear in, be in

Although the book was devoted to cancer, the word ‘cancer’ did not even appear in the index.

| consult, look (sth up) in

Why don't you look up her name in the index?

| compile

INDEX + VERB

give sth, list sth

The index only gives the main towns.

PREP.

in a/the ~

Is there any reference to it in the index?

| ~ to

It's a general index to the whole work.

2 ordered record of books/files

ADJ.

subject, title | card | computer, computerized

VERB + INDEX

have, keep

We keep a card index of all the titles on the shelves.

| compile, create | consult, look (sth up) in, search

Look up ‘The Waste Land’ in the index. Search the index to find the address of the data file.